editor:
notepad++
sublime text

modelling:
staruml

screen capture:
setuna2
jing

code coverage:
opencover

decompile .net assembly:
ilspy

command prompt:
conemu

tools collection:
systeminternals
nirsoft
softwareok

protocol analysis:
wireshark
fiddler
port peeker

remote desktop manager:
multidesk

calculator:
bincalc

bootable usb disk maker:
rufus